Reply by LesB

Woodchuck is correct. At first glance I though it was a surgical or autopsy saw but a little research showed that Jarvis makes butchering equipment. They may make surgical stuff too.
If anyone is interested my wife has a bone saw used for surgery and autopsies she would be glad to sell you. Before we retired she use to harvest human body parts from deceased tissue donors for transplanting. It comes with a straight blade and a core cutting blade. It cuts by oscillating back and forth very fast in short strokes that do not cut flesh but do a real job on bone. it is a $1200 saw but I’m sure she would let it go for about $350.